Improved wheel for railway cars



No. 101259. V I Patented Marh-29, 187.0.

Cinitrd tenca JEREMIAH GREEN, OF TROY, NEW YORK. A

Letters Patent NO. 101,259, dated ilfarch 29, 1870. i

' IMPROVED WHZEIEL FOR RAILWAY (JARS.I

A The Schedule refen-e to in these Letters Patent and making part of thesame.

To all whom it :may concert::

Be it known that I, J EREMIAH D. Gnnnx, of Troy, in the county ofRensselaer and State of New York, have invented a new and usefulimprovement inGastiron \Vheels for Railway Carriages; and I do hercbydeclare that the following is a full, clear, and evact description'thereof, reference being had to the accompanying drawings and to theletters of reference marked thereon.

The object of my invention consists in the constru'etion of arailway-car wheel that may be cast in one possessing much greaterstrength to resist vertilcal and lateral strains when in use than anyheretofore made.

The nature of my. said invention consists in the pecular const-ructionofthe single plate or web uniting the rim and 'hub of, the wheel, whichplate has a series of radial corrugations extending around and occupying alternate positions on each side thereof, with two or more of thecorrugations extending from the rim, uniting into one at or near to, andwhich then joins the hub; thesaid plate is also made in a peculiarcurved or arched shape from the hub to the rim of the wheel; and thatpart of the corrugated plate extending alternatelyneai'est-to the endsof the hub is made much thicker `fivhere joining thereat than the otherparts of said plate, substantially as and for the. purpose hereinafterdescribed and shown.

In the accompanying drawings- Figure 1 is a view of the flange or backside of the wheel.

Figure 2, the front side thereot'. v

Figure 3 is as'ectional view from hub-to rim, taken at the dotted line ufu.- Qf fig. 1.

Figure 4 is a sectioual view from hub to rim, taken at the dotted line u3/ of fig. 1.

Figure 5 is a sectional view from hub to rim, taken at the dotted line wo of fig. 1.

Fignre 6 is a sectionalview o`f the corrugated plate, taken near to-andconcentiic with -the hub; and

Figure 7 is a sectional view of the corrngated plate, taken near to andconcent-ric with the lim or tread of the wheel. f

Figs. 1 and 2 show respectively t-hefi'ont and back side of one-half ofmy improved wheel, the other half thereof being construeted in preciselythe same man-` ner, and the hub A is united to the rim or tr`ead B'bythe corrugated or grooved plate or web'Q-sothatthe hub, plate, and rim,composing the wheel, are cast solid together, and form a wheel havingand showing the following distiuguishing features of construction.

Two or" more of the radial corrugations D and E extend from the rim B,uniting into one near to or at and then joiuing the hub A.

Arranged next to said united corrugations is a single corrugation, H,extending fromvthe hub to the rim, the said united and singlecorrugations being respectively arranged in alternating successionaround or throughout the whole plate O, suhstantially as showu in figs.1 and 2.

These grooves or corrngations are more or less semicircular in shape,and form a series of elevat-ions and depressions, which are arrangedaround the plate so as to occupy alternate positions on each sidethereof, substantially as shown in figs. (i and 7, and so as to givetirrn support to the hub and rim against all lateral strains or shocks.The said corrugations, where joiniug thereto or thereon, are spread'outor extended to nearly the whole length of the hub and width of the rim.

For plates of the ordinary-sized railway-car wheels, I make twelvegrooves or corrugations at the rim, which are united near to and so asto form but six at the hub. A greater number of corrugatious next thehub of the size and form to give proper strength thereto, \vould beimpracticablejn molding and casting the wheel, on account of breakingthe mold in dran'ing the pattern thcrefrom, or by Washing the mold incasting.

To give the necessarily great strength and stiffness required in theplate to withst-and lateral strains atand near the hub, which parts areexposed to the greatest strain when in use, I make that part of thecorrugat-ion which exteuds the nearest to the ends of the hub muchvthicker atand where joining the hub than the rest of the plate, inmanner as shown at a, in figs. 3, 4, 5, and 6 of the drawings, and so asto taper into the usual thickness of the rest of the plate, as' shown.This also greatly facilitates the molding and casting of the wheel, byshortening the depth of the groovcs or corrugations, so that the mold isnot broken in drawing the pattcrn therefrom, nor washed iu castingthewheel.

The face sides of the plate, from the hub to the rim, are formed incurves, in manner substantially as shown at b and o in figs. 3 and 4,and at d in fig. 5, which extend from hub to rim, and are arrauged inthe following order or succession: first, the curve b on line u w, figs.1 and 3; next, the curve c on line u y, figs. 1 and 4; and next, thecurve (i on line u o, figs. l and 5, and iu the same' order ofarrangement around the plate, and in alternate positions on each sidethereof. This peculiar corrngated and curved construction of I hub.

the plate gives greater strength to the whole wheel, and much bettersupport to the hub and rim to 'resist lateral and direct or verticalstrains when in use, and `with less metal than heretofore used incar-wheels; and also this peculiar form of plate gives it the greatestfacilities tovyield in all directions by the flattening of the eurvesthereof, so as to compensate for the uneqnal contraction of theI metalof the sevexal'parts of the wheel in cooling after being cast, so that awheel is made free from t'ractnies or fiaws, and with a solid It alsoobviates the expense of ring cores in rnolding, and the consequentliability of wheels in casting being chilled in the plate or web,` orhoney-combed, by wet or. dalnp cores, or the want of proper vent forescape of the gases from cores.

I claim- 1. Uniting two or .more of the radial corrugations D and E,extending from the rim B, so as to join the i described."

2; The combiuation of said united corrugations D and E, extending fromthe rim B, with the single corrngations H, extending from hub A to rimB, substantially as and for the purpose described. A

3. The combination of the said single and united corrugations H and D Ewith the curves b, c, and d, of the plate O, substantially as and forthe purpose described. i i 4 4. In a car-wheel, constrncted asdescribed, having the corrngations D E and H, making that part of thecorrugated plate joining thehub A, near its ends, of

greater thickness than its other parts, and graduallydeereasing ortapering it `into the thiekness of the other parts of the plate,substantiallyV as shown and for the purpose described.

JEREMIAH D. GREEN.

\Vitnesses H. I. ALvoRn, WM. Knsnnn.

